OK, let's crack this. We're given 431 and our task is to multiply it by 137. Essentially, we'll be adding 431 to itself 137 times.
Step 1: 0 + 431 = 431
Step 2: 431 + 431 = 862
Step 3: 862 + 431 = 1293
Step 4: 1293 + 431 = 1724
Step 5: 1724 + 431 = 2155
Step 6: 2155 + 431 = 2586
Step 7: 2586 + 431 = 3017
Step 8: 3017 + 431 = 3448
Step 9: 3448 + 431 = 3879
Step 10: 3879 + 431 = 4310
Step 11: 4310 + 431 = 4741
Step 12: 4741 + 431 = 5172
Step 13: 5172 + 431 = 5603
Step 14: 5603 + 431 = 6034
Step 15: 6034 + 431 = 6465
Step 16: 6465 + 431 = 6896
Step 17: 6896 + 431 = 7327
Step 18: 7327 + 431 = 7758
Step 19: 7758 + 431 = 8189
Step 20: 8189 + 431 = 8620
Step 21: 8620 + 431 = 9051
Step 22: 9051 + 431 = 9482
Step 23: 9482 + 431 = 9913
Step 24: 9913 + 431 = 10344
Step 25: 10344 + 431 = 10775
Step 26: 10775 + 431 = 11206
Step 27: 11206 + 431 = 11637
Step 28: 11637 + 431 = 12068
Step 29: 12068 + 431 = 12499
Step 30: 12499 + 431 = 12930
Step 31: 12930 + 431 = 13361
Step 32: 13361 + 431 = 13792
Step 33: 13792 + 431 = 14223
Step 34: 14223 + 431 = 14654
Step 35: 14654 + 431 = 15085
Step 36: 15085 + 431 = 15516
Step 37: 15516 + 431 = 15947
Step 38: 15947 + 431 = 16378
Step 39: 16378 + 431 = 16809
Step 40: 16809 + 431 = 17240
Step 41: 17240 + 431 = 17671
Step 42: 17671 + 431 = 18102
Step 43: 18102 + 431 = 18533
Step 44: 18533 + 431 = 18964
Step 45: 18964 + 431 = 19395
Step 46: 19395 + 431 = 19826
Step 47: 19826 + 431 = 20257
Step 48: 20257 + 431 = 20688
Step 49: 20688 + 431 = 21119
Step 50: 21119 + 431 = 21550
Step 51: 21550 + 431 = 21981
Step 52: 21981 + 431 = 22412
Step 53: 22412 + 431 = 22843
Step 54: 22843 + 431 = 23274
Step 55: 23274 + 431 = 23705
Step 56: 23705 + 431 = 24136
Step 57: 24136 + 431 = 24567
Step 58: 24567 + 431 = 24998
Step 59: 24998 + 431 = 25429
Step 60: 25429 + 431 = 25860
Step 61: 25860 + 431 = 26291
Step 62: 26291 + 431 = 26722
Step 63: 26722 + 431 = 27153
Step 64: 27153 + 431 = 27584
Step 65: 27584 + 431 = 28015
Step 66: 28015 + 431 = 28446
Step 67: 28446 + 431 = 28877
Step 68: 28877 + 431 = 29308
Step 69: 29308 + 431 = 29739
Step 70: 29739 + 431 = 30170
Step 71: 30170 + 431 = 30601
Step 72: 30601 + 431 = 31032
Step 73: 31032 + 431 = 31463
Step 74: 31463 + 431 = 31894
Step 75: 31894 + 431 = 32325
Step 76: 32325 + 431 = 32756
Step 77: 32756 + 431 = 33187
Step 78: 33187 + 431 = 33618
Step 79: 33618 + 431 = 34049
Step 80: 34049 + 431 = 34480
Step 81: 34480 + 431 = 34911
Step 82: 34911 + 431 = 35342
Step 83: 35342 + 431 = 35773
Step 84: 35773 + 431 = 36204
Step 85: 36204 + 431 = 36635
Step 86: 36635 + 431 = 37066
Step 87: 37066 + 431 = 37497
Step 88: 37497 + 431 = 37928
Step 89: 37928 + 431 = 38359
Step 90: 38359 + 431 = 38790
Step 91: 38790 + 431 = 39221
Step 92: 39221 + 431 = 39652
Step 93: 39652 + 431 = 40083
Step 94: 40083 + 431 = 40514
Step 95: 40514 + 431 = 40945
Step 96: 40945 + 431 = 41376
Step 97: 41376 + 431 = 41807
Step 98: 41807 + 431 = 42238
Step 99: 42238 + 431 = 42669
Step 100: 42669 + 431 = 43100
Step 101: 43100 + 431 = 43531
Step 102: 43531 + 431 = 43962
Step 103: 43962 + 431 = 44393
Step 104: 44393 + 431 = 44824
Step 105: 44824 + 431 = 45255
Step 106: 45255 + 431 = 45686
Step 107: 45686 + 431 = 46117
Step 108: 46117 + 431 = 46548
Step 109: 46548 + 431 = 46979
Step 110: 46979 + 431 = 47410
Step 111: 47410 + 431 = 47841
Step 112: 47841 + 431 = 48272
Step 113: 48272 + 431 = 48703
Step 114: 48703 + 431 = 49134
Step 115: 49134 + 431 = 49565
Step 116: 49565 + 431 = 49996
Step 117: 49996 + 431 = 50427
Step 118: 50427 + 431 = 50858
Step 119: 50858 + 431 = 51289
Step 120: 51289 + 431 = 51720
Step 121: 51720 + 431 = 52151
Step 122: 52151 + 431 = 52582
Step 123: 52582 + 431 = 53013
Step 124: 53013 + 431 = 53444
Step 125: 53444 + 431 = 53875
Step 126: 53875 + 431 = 54306
Step 127: 54306 + 431 = 54737
Step 128: 54737 + 431 = 55168
Step 129: 55168 + 431 = 55599
Step 130: 55599 + 431 = 56030
Step 131: 56030 + 431 = 56461
Step 132: 56461 + 431 = 56892
Step 133: 56892 + 431 = 57323
Step 134: 57323 + 431 = 57754
Step 135: 57754 + 431 = 58185
Step 136: 58185 + 431 = 58616
Step 137: 58616 + 431 = 59047

So, 431*137 = 59047